Will the next US President have significant trouble getting authorization and funding for a war, any war?

Absolutely.After this debacle I believe the congress and senate will be so gun shy they would have to be led kicking and screaming into another conflict.I also bet they feel a bit hood-winked by the "experts" who drove home the idea of the necessity of going to war in the first place.Avery,let's not forget the re-election of the people who voted for the invasion.They want to distance themselves from conflict as much as possible.The only way I can see funding/authorization would be in the event of invasion or nuclear war...the latter would be moot,however,don't you think?